import java.util.Scanner;

public class demo02 {
    volatile public static int flag=0;
    public static void main(String[] args) {
        Thread t1=new Thread(()->{
            while (flag==0){
                System.out.println("线程t1");
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
            System.out.println("循环结束，t1结束！");
        });
        Thread t2=new Thread(()->{
            Scanner sc=new Scanner(System.in);
            System.out.println("请输入一个整数：");
            flag=sc.nextInt();
        });
        t1.start();
        t2.start();
    }
}
